7mm Build - Caliber questions

opper

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Hi All - Just working out my plan for my 7mm - I want a long range hunting rifle in 7mm to shoot berger 168's and possibly 180's. Now I have been thinking about the 7 rem mag - but I am not sure about the ring on the case and feeding. Can anyone recommend a round with similar ballistics without the brass ring.

Thanks in advance for your time,
Jason
 
There are many thousands of rifles chambered for 7mm Remington Magnum shooting very accurately and feeding fine. There are no particular problems to overcome.

A good action, a good barrel, correctly chambered and bedded in a good stock... it's no big deal...
 
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The whole supposed belt issue is completely over blown. As the others have said, there's plenty of 7mm Rem. Mags out there. I've got a Rem 700 Sendero in 7 mm Mag and it's easily MOA or better for 5-shot groups.

If you're looking for similar performance but greater efficiency (read less powder burned) consider a .280 Remington Ackley Improved. As a bonus, you get less recoil and potentially better barrel life.
 
7mmRM works. And it works well. I shoot mine out of a 24" 9.5 twist barrel. I have not tried the 180s yet, but mine like the Berger 168 VLD and really likes the Amax 162g. A muzzle break is nice for it, although I shot probably 200 rounds before that without the break and it wasn't so bad. I feel spoiled now with the break.

Are you planning on hunting long range with this cal, or just paper punching long range. you really don't need a magnum for paper. A 7mm-08 would do everything you need at 1000+.
 
7RM, that is is what I use in my own LR rifle.

If doing a shouldered barrel install like on a Rem, see that guy in post #2. Does great work and has a superb reamer for the 7RM.

If looking for a prefit, I can help.

The 7WSM is a very nice cartridge but I like the extra case capacity when trying to push the heavies.

Jerry
 
7mm wsm is like a 7mm rm, i looked into these cartridges for an upcoming build, but after doing alittle research on them alot of guys complain about the short barrel life which discouraged me. ballistically they are great, i just wouldnt want to put a new barrel on every 1000 rounds to maintain excellant accuracy!
 
Comparing the 7mmRM to the 7mmWSM, the ballistics are very close but I prefer the WSM because of the superior brass. I own both and hands down the WSM brass is thicker and tougher.
 
Hi All - Just working out my plan for my 7mm - I want a long range hunting rifle in 7mm to shoot berger 168's and possibly 180's. Now I have been thinking about the 7 rem mag - but I am not sure about the ring on the case and feeding. Can anyone recommend a round with similar ballistics without the brass ring.

Thanks in advance for your time,
Jason

Jason, the 7RM story has been around for ages so I won't bother rehashing old news, it has a proven track record, period. The belt is not an issue for feeding although it is not as smooth as the new unbelted calibers out there. Now on to your actual question:
Can anyone recommend a round with similar ballistics without the brass ring.

I have experience with three, first is the 280 Rem. then the 280 Ackley and the third is the 7mm Dakota. The Ackley will get you to within a hundred feet per second of the RM, the Dakota will blow over the RM by 200 fps, the Dakota will give you what you want at very very long range with the 180 Bergers, we tested this exact bullet in the Dakota this year on Whitetail and although it wasn't extreme ranges it was nonetheless a 430yd shot, the bullet can fly well but it is very very fragile, I would say it is more fragile than the Sierra which is already considered a fragile bullet so head the warning if you go this route! Others to consider are the 7mm RUM and the 7WSM.
bigbull
 
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If you choose a a 7mm Rem Mag, you don't have to worry about feeding problems, I have never put more than 1 in the chamber at once 1 shot 1 kill:D
 
I had the same decision to make in the summer. I ended up going with the 7wsm, mainly because its a short action. In terms of barrel life, you can burn either barrel out quickly, I never load for speed, I load for accuracy, so I don't worry about barrel life.
There are some very impressive results from the 7wsm including competition shooters so I figured if PGW could build me a real shooter I'll be happy. I haven't recieved the rifle yet but it should be here any day, so I can't report on results.

Ivo
 
I had the same decision to make in the summer. I ended up going with the 7wsm, mainly because its a short action. In terms of barrel life, you can burn either barrel out quickly, I never load for speed, I load for accuracy, so I don't worry about barrel life.
There are some very impressive results from the 7wsm including competition shooters so I figured if PGW could build me a real shooter I'll be happy. I haven't recieved the rifle yet but it should be here any day, so I can't report on results.

Ivo

Going this route can be very interesting when it's done with one of the short actions, it makes for a very compact and powerfull package.
bigbull
 
worried about feeding? keep in mind that the belted magnums are for the most part, children of the great 375 h&h magnum and are called that because of their lineage. the belt was put on the 375 to improve feeding over rimmed cartridges. the belt will not catch on the next round in the magazine. headspacing is positive, every time just like a rimmed cartridge. rimless cartridges leave a lot to be desired in that area. once fired a rimless cartridge with neck sizing only and a good shoulder should headspace the same every time, but for those who do not handload, they have to put up with manufacturers tolerance. the 375 family of cartridges offer a greater magazine capacity over the short mags with a slightly longer bolt throw. BFD! trust me if your next shot depended on a quarter inch or whatever of bolt travel, then your life better be at stake. and even then i doubt it would make much differance. rimless cartridges feed better out of semis but they are generally not as accurate as bolts. so ask yourself is this for target, hunting or personal defense? for target, all the accuracy you can get is important. for hunting, most of the equipment we spend hard earned cash on is more capable than we are. for personal defense, if that is a situation you live with constantly then move! call the police!, or buy a good shotgun most of your work will happen at close range anyway. there, thats my 2 cents and its probably worth every penny you paid for it. i think the short mags are a marketing scheme, but they have found their niche there is no magic in the numbers and it is all kinnetic energy (remember grade nine?.... yeah it bored me to tears too.) what we are blessed with today is better bullets, better manufacturing (on a large scale, custom will always be best) and a better informed individual. people are just more technical thes days. deer, moose and bears however are built the same way they were 1000 years ago. two legged filth is too.
 
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